2

I'm trying to optionally include a parameter in a puppet class instance. If a value is provided, the parameter should be passed to the class, and if it's empty it shouldn't be.

This the code I have so far:

class vcs (

    $path,
    $ensure,
    $provider,
    $source = '',
    $revision = '',
    $user = ''

)

{
    vcsrepo { $path:
      ensure   => $ensure,
      provider => $provider,
      source => $source ? {
        '' => nil,
        default => $source
      }
    }   

}

I've tried to set the value of the source parameter to be nil in case it isn't set, but Puppet doesn't seem to understand neither nil nor null. (I get a fatal: repository 'null' does not exist error)

Basically, I want to be able to call the vcs class, with only the path and ensure parameters to be required and all the others to be optional.

2

Solution was to use undef instead of nil/null.

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